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Finding the Fourth Proportional to 53,486.87, 80,248.59 and 20,216.52

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Solution

The fourth proportional to 53,486.87, 80,248.59 and 20,216.52 is: 30,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,486.87 : 80,248.59 = 20,216.52 : x
  2. Step 2: Convert to fraction form
    53,486.87/80,248.59 = 20,216.52/x
  3. Step 3: Cross multiply
    53,486.87x = 80,248.59 × 20,216.52
  4. Step 4: Simplify right side
    53,486.87x = 1,622,347,224.71
  5. Step 5: Solve for x
    x = 1,622,347,224.71/53,486.87
  6. Step 6: Final answer
    x = 30,331.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.